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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $6,706,206 | $10,863,455 | $2,111,702 | $112,217,269 | $57,211,536 | $143,060,787 | $103,409,154 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $1,950,066 | $9,838,590 | $6,537,656 | $2,215,359 | $20,531,810 | $30,857,982 | $20,975,226 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $1,533,239 | $13,543,854 | $2,224,856 | $18,251,711 | $11,178,559 | $8,621,812 | $6,847,220 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $2,325,555 | $5,469,294 | $5,014,264 | $23,044,271 | $11,820,091 | $42,523,593 | $17,967,203 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $2,836,497 | $1,484,774 | $2,836,597 | $6,251,212 | $5,511,795 | $22,366,959 | $5,539,217 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $2,958,091 | $8,516,130 | $1,267,882 | $6,241,069 | $10,944,745 | $41,273,347 | $20,414,164 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $12,650,120 | $16,367,958 | $10,224,079 | $17,565,665 | $86,419,704 | $64,598,003 | $18,407,635 |
| Total | $30,959,774 | $66,084,055 | $30,217,036 | $185,786,556 | $203,618,240 | $353,302,483 | $193,559,819 |
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